What did you draw the conclusion that the language files are not
packaged?

The fact that on my installation Rekonq is English instead of German, even
though I never manually set it to English.
Rekonq is fully translated to German in SVN (since I am one of its
translators
I know for sure ;) )
See: http://bayimg.com/calpoAACd

The German parts are the independently packaged Konqueror KCMs.

Markus

I checked a little further the po files in the source tarball and this
is what is indicated: